Playing online with modded Wii & Game Saves

Howdy y'all, have another question for the excellent people here at Wiihacks. Is it safe to play online with a modded Wii? I have 4.2u and latest CIOS. I searched here on the forums and I've learned that it's safe to, for at least Brawl.

Which brings up another question, how about NEWER games? Like Mario Kart Wii and Tatsunoko vs Capcom? I'm sure they are safe to play online...BUT, what if I modified the game save as in download one from online? I don't feel like unlocking everything in TvC but the game is Wifi and the save is locked.

I've already downloaded Save Game Manager for HBC and I'm ready to go it's jsut that I'm afraid that when I get online with TvC I'll either be banned from Nintendo WFC because of my modded Wii because TvC is the newest game for WFC, or because I'm using a save file downloaded from the internet (NTSC file from GameFAQs.com BTW).

They won't scan it yet.... They might do it in the future seeing how they learned how to patch their games.

That's my mind set...that "eventually" they will release a new game that totally fubars my Wii, and TvC is a new game. >.> I'm sure if TvC did that there would be major talks all over the forum but better safe than sorry amirite?